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LEDs for EtherCAT Data Diagnosis

LEDs   Display Status Description
I/O-Run Green Off — EtherCATEtherCAT is an open, high-performance Ethernet-based fieldbus system. The development goal of EtherCAT was to apply Ethernet to automation applications which require short data update times (also called cycle times) with low communication jitter (for synchronization purposes) and low hardware costs Bus inactive
On — EtherCAT Bus active
LED Red; I/O Error Error Code Argument Description Remedy
Persistent, continuous blinking   EMC problems
  • Check power supply for overvoltage or under voltage peaks
  • Implement EMC measures
  • If a EtherCAT Bus error is present, it can be localized by a restart of the coupler (by switching it off and then on again)
1 PulseWhen the step gets activated, the action is activated for a single execution, and possibly once again when the step is deactivated 0 EEPROM checksum error Set manufacturer’s setting with the configuration software
1 Code buffer overflow Insert fewer Bus Terminals. The programmed configuration has too many entries in the table Software update required for the Bus Coupler
2 Unknown data type Software update required for the Bus Coupler
2 Pulses 0 Programmed configuration has an incorrect table entry Check programmed configuration for correctness
n (n > 0) Table comparison (Bus Terminal n) Incorrect table entry
3 Pulses 0 EtherCAT Bus command error
  • No Bus Terminal inserted
  • One of the Bus Terminals is defective; halve the number of Bus Terminals attached and check whether the error is still present with the remaining Bus Terminals. Repeat until the defective Bus Terminal is located.
4 Pulses 0 EtherCAT Bus data error, break behind the Bus Coupler Check whether the n+1 Bus Terminal is correctly connected; replace if necessary.
n Break behind Bus Terminal n Check whether the Bus End Terminal is connected.
5 Pulses n EtherCAT Bus error in register communication with Bus Terminal n Exchange the nth Bus Terminal
14 Pulses n nth Bus Terminal has the wrong format Start the Bus Coupler again, and if the error occurs again then exchange the Bus Terminal
15 Pulses n Number of Bus Terminals is no longer correct Start the Bus Coupler again. If the error occurs again, restore the manufacturers setting using the configuration software
16 Pulses n Length of the EtherCAT Bus data is no longer correct Start the Bus Coupler again. If the error occurs again, restore the manufacturers setting using the configuration software

 

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